Preposition: from

• potato: What is the optimum temperature for catalase from a potato?

Converse of object

• call: Treatment with other enzymes called catalases has increased the survival of MND mice 18.

• do: Does catalase have different properties in liver than in potatoes?

Modifies a noun

• activity: How does catalase activity vary from a healthy to a diseased region?

• enzyme: The catalase enzyme breaks down hydrogen peroxide the major antibacterial factor in other types of honey.

• level: Do any of the following stresses affect the catalase levels of seedlings?

Noun used with modifier

• enzyme: In Year 11 all the students undertake an investigation into the activity of the enzyme catalase.